Leather-skiving machine.



G, O. TERRY. LEATHER SKIVING MACHINE. APPLICATION FILED MAYl3, 1916- Patented Feb. 27, 1917.

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GEoEGE ORVILL TERRY, 0E MINNEAPOLIS, MINNESOTA.

LEl-L'fl-ITIEER-SKIVINGr MACHINE.

Specification of Letters Patent.

{Patented Feb. 27, 1917.

Application filed May 13, 1916. Serial No. 97,300.

To all whom it may concern:

Be it knownthat I, GEORGE O. TERRY, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new and useful Leather-Skiving Machine, of which the following is a specification. Y

This invention, which has reference to shoe machinery-more particularly repairing outfits-and particularly relates to im provements in leather skivers, primarily has for its object to provide an improved construction of leather skiver in which is included an improved holding means that adapts the blade to skive heavy upper leather or the hardest sole leather to the desired widths and shapes of bevels and in which provision is made for holding the outer end of the blade solidly and under sufficient flexibility to allow for all of the necessary movements of the blade. 1

Another object of my invention is to provide, in a leather skiver, a blade holder mounted to provide for the required vertical and longitudinal adjustment necessary for the proper working result.

With other objects in view that will hereinafter appear, my invention is an improved construction of leather skiver that embodies the peculiar combination and arrangement of the parts hereinafter fully explained, specifically pointed out in the appended claims and illustrated in the accompanying drawing, in which:

Figure 1 is a perspective view of my leather skiver and illustrates the practical application of my invention.

Fig. 2 is a longitudinal section of the skiver blade holder, on an enlarged scale.

Fig. 3 is a top plan view of the parts shown in Fig. 2 i Fig. 4 is a perspective view of the holder and the blade, the latter being shown as separated from the holder.

Fig. 5 is a detail transverse section of the blade holder and the adjacent frame members, parts of the feed rolls being shown in front elevation. i

In the drawing 1 designates one of the side members of the frame of my skiving machine, 2 the lower or fixedly held feed roll, 3 the upper or vertically adjustable feed roll, 30 the adjusting means for regulating the said feed roll 3, and 4 the horizontal frame portion upon which the blade holder is mounted. The several parts 'de scribed being of a well-known construction, need not be further specifically mentioned, since my present invention is more particularly confined to the blade holder and the means wherebyit is mounted for being rigidly held and adapted for adjustment to the different positions necessary toeflect the desired working result. I

7 Referring now more particularly to Figs. 2 and 3, 5 designates the blade holder, of suitable material, round, square or oblong, and the said holder may be or may not be machined to form a depressed seat portion 50 for receiving one edge of the blade 6, that is rigidly attached, along said edge, to the holder, by screws "60.

The holder 5 is hingably mounted between the opposite members 40-40 of the frame 4:, and the said hinge connection, (which may be of any suitable character that provides for the required vertical setting and the longitudinal adjustment of the blade 6 to suit the character of the leather blank to be operated on and for the proper setting of the blade, that is made necessary after sharpening,) on account of economy in structure and ease of adjustment is preferably made as shown-in the drawings which illustrates screw pivots 77 that thread through the opposite ends 4=04c0 of the frame 4 and have their conical ends 70-70 held to engage the conical sockets 5151 in the opposite ends of-the holder, as shown.

While I have illustrated the cutting edge of the blade as centrally locatedfwith the axial line of the hinge or pivot connection, the said blade holder may be so hung that the cutting edge of the blade'is in a plane either above or below the said axial line or hinge line as indicated by the dash lines at and y on Fig. 2. 1 v v Again the holder may be so formed that it'is possible to hang the blade with the pivot or hinge connection on a line a short distance in from the edge or side of the blade, or on a line with the edge orside of said blade or on a line outside of the said edge or side of the blade as is indicated by the dash lines ab on Fig. 3.

By referring more particularly to Fig. 1, it will be noticed that the blade 6, when swung up to its operative position, has its cutting or beveling edge arranged in advance of and in substantial alinement with the wiping faces of the upper and lower feed rolls 3 and'2 and the said blade is supported at the outer end in a hanger 9 that is pivotally mounted on a clamp screw bearing 10 that takes into the axial end of the upper feed roll shaft 70 and the said hanger has notches 90 into either of which the edge of the blade enters when it is swung up in alinement therewith and in which the said blade is firmly and rigidly held by a stout coil spring 12 that connects with the hanger and the rear edge of the blade, as is clearly shown in the drawing.

13 designates the leather guide that regulates the width of cut adjustment and which is held to its adjusted positions by the said screw 15.

l6-l6 designate the crank actuated gears on the upper and lower feed roll shafts and 17 denotes the hinged bearing arm that carries the upper roll shaft and which is held to its adjustment by the winged nut that engages the screw 30 which passes through the slotted end of the bearing 17 and the base of the frame 4 and carries the cushion or bearing spring 32, as is clearly shown in Fig. 1.

From the foregoing description taken in connection with the drawing, the complete arrangement, the manner of operation and the advantages of my skiving machine will be readily apparent to those skilled in the art to which my invention relates.

By reason of mounting the means that sustain the outer end of the blade that is fixedly connected at its inner end to the hinged and endwise adjustable support or holder, the said blade automatically adjusts itself to suit the different thicknesses of leather to be skived as the upper feed roll is adjusted to suit the different thicknesses of leather to be passed through the feed rolls.

What I claim is:

1. In a skiving machine, a hingedly mounted holder, said holder being longitudinally adjustable, a blade fastened along one of its edges to the said holder, and means for supporting the opposite edge of the blade in the desired working position of the blade.

2. In a skiving machine, the combination with feed rolls; of cutting mechanism for skiving leather blanks fed between the rolls, the said mechanism including a holder, a skiving blade rigidly attached along one edge 'to the holder, means for so mounting the said holder whereby it can be rocked to adjust the blade to the desired angle with respect to the plane of the leather to be worked on and whereby said holder can be adjusted in order to move the cutting edge of the blade to or from the plane containing the axes of the rolls, and means for sustaining the opposite edge of the blade in the desired position of the blade.

3. In a skiving machine of the character stated, the combination with feed rolls that convey the leather blank edgewise to the skiver blade; of a means for beveling the leather blank, said means including a skiving blade and means longitudinally movable with reference to the line of feed of the leather blank for hingedly supporting one edge of the blade, said means also including devices for positioning the cutting edge of the blade at an angle with respect to the front edge of the blank to be worked on.

4. In a skiving machine, a pair of opposing feed rolls, one of which is vertically movable with respect to the other, a skiver blade, a holder for the blade positioned at right angles to the rolls, said skiver blade being attached at one edge to the holder, the said holder being hingedly mounted whereby to swing the skiver blade in line with the wiping faces of the two rolls, means for effecting longitudinal movement of the holder and other means for supporting the opposite edge of the blade, the said means being attached to and shiftable with the movable roll.

5. A skiving machine comprising a frame, a pair of opposing feed rolls, one of the said rolls being resiliently supported relatively to the opposing roll, a blade holder rockably mounted on the frame and longitudinally adjustable, a skiver blade rigidly attached at the inner edge to the holder, and a con- .nection that joins the outer edge of the blade to the resiliently supported roll, whereby the inclination of the blade is automatically varied for different thicknesses of work. 6. A skiving machine comprising a frame, a pair of opposing feed rolls, one of the said rolls being resiliently supported relatively to the opposing roll, a blade holder rockably mounted on the frame and longitudinally adjustable, a skiver blade rigidly attached at its inner edge to the holder to rock with the holder, a hanger pivotally hung on the resiliently supported roll and provided with a notched bearing and adapted to engage the blade when it is swung up to its operative position, and a spring connection in engagement with the hanger and the blade for holding the blade in engagement with the said hanger.

GEORGE ORVILL TERRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, D. G. 

